Why it works: Onion and pepper are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 68,474 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Duck Pie
Ingredients
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare the duck
Boil the duck for about 15 minutes.
Remove the neck and wings.
Make the gravy
In a stewpan, melt the butter and add the neck, wings, giblets, herbs, onion, anchovy, mace, salt, pepper, and cayenne.
Pour in the boiling water and stew gently for 1 hour.
Strain the mixture and add it to the duck's gravy.
Assemble and bake
Cut the duck into pieces and arrange it in a pie dish.
Adjust seasoning if needed.
Skim off the fat from the cold gravy and pour it over the duck.
Cover with puff pastry or your preferred crust.
Bake for 1 hour at 350°F (175°C).
Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Butter + anchovytop 13% of all pairsSmell alikemoderateCooked together3,697 recipes
Shared aroma: decanal (soap, orange peel).
-
Onion + anchovytop 14% of all pairsSmell alikelowCooked together1,263 recipes
Shared aroma: decanal (soap, orange peel).
-
Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
-
Mace + peppertop 16% of all pairsSmell alikelowCooked together12,257 recipes
Shared aroma: myristicin (spice, warm).
Mace and pepper barely smell alike, yet cooks put them together in 12,257 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Duck
- Provides the meat and the fat and juices that enrich the gravy.
- Butter
- Fat that carries the aromatics' flavour and adds richness to the gravy.
- Puff pastry
- Forms a flaky, golden crust that seals and covers the pie.
- Onion
- Adds savoury sweetness and depth as it softens into the gravy.
- Anchovy
- Adds deep savoury umami that rounds out the gravy without tasting fishy.
The step that matters
Skim off the fat from the cold gravy. Fat left on the gravy can make the filling greasy and cloud its texture. Chilling lets the fat rise and set so it can be lifted off cleanly before the gravy is poured over the duck.
Swap the mace
How well each one fits the dish's main ingredients (butter, onion, anchovy, pepper):
- Garlicfits better
- Parsleyfits better
- Thymefits better
- Macethe original
Fit is the average pairing score against butter, onion, anchovy, pepper. Candidates are from the same food group and used in at least 100 recipes.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Tomato Soup526 recipes
Brown Bread461 recipes
Mutton Broth292 recipes
Yorkshire Pudding264 recipes